US48850A - Improvement in steam-blowers - Google Patents

Description

No. 48,850. PATENTED JULY 18, 1865.

J. W. STEVENS. STEAM BLOWER.

J F g i m: onms PETERS ca, mmo-u'ma, wAsHlNoYoN o c UNITED STATES PATENT OFFICE.

JOHN W. STEVENS, OF SOUTH DAnvEns, MASSACHUSETTS.

IMPROVEMENT IN STEAM-BLOWERS.

Specification forming part of Letters Patent No. 48,850, dated July 18, 1865.

To all whom it may concern:

Be it known that 1, JOHN W. STEVENS, of South Danvers, in the county of Essex and State of Massachusetts, have invented an improvetlfiteam-Blower; and I do hereby declare that the following, taken in connection with the drawings which accompany and'formpart of thisspecification, is adescription' of my invention sufficient to enable those skilled in the art to practice it.

In the use of such steam-blowers as are placed outside of the ash-pitsof steam-boiler furnaces to maintain, urge, and increase combustion of the fuel it is found very difficult, if notimposbie, to maintain orimprove combustion in furnaces in which bagasse, wet tau, coal-dust, sawdust, and like fine substances areemployed for fuel, the reasons for which it is not herein necessary to specifyrand in the use of such steam-blowers as are placed within the ash-pit a-frequent cause of imperfect action is found in the tendency of the steam-jet holes to clog with ashes and fine fuel.

The blower constructed by me is intended to and does obviate these difiiculties. placed within the ash-pit, with the holes in the pipe so arranged that the steam is driven upward directly into the incandescent-fuel; and my invention consists in the application thereto of a blow-oil cock, by which the direction- I of the steam-current may be changed, issuing in a. jet so much larger than the diameterof the'blower-holes that all deposits of ashes and other fine substances may be blown from the pipe, whenever necessity may require it, by simply opening this blow-0d cock under pressure of thesteam;

A blower embodying-this improvement is shown in plan in Figure 1, and in side view in Fig. 2.

therefrom.

It is a denotesthe steam-pipe from the boiler; .b, the blower, which is shown as composed'of a circular pipe and n return-pipe, c, which are placed horizontally in the ash pit under the grate-bars, these blower-pipes having holes through their upper surfaces, through which the steam issues in jets to urge the combustion of the fuel. The pipe 0 at its front end is provided with astop-cock, d, the eduction-orifice of which is prefernblyjust without the ash-pit door.

n will be erident that it the cock dis closed the steam will be forced directly into the body of fuel, and. that'whenever the pipes b and 0 become clogged with ashes or other deposit, by simply opening the cock cl with full pressure of steam, or such pressure as may be necessary, such deposit will" be blown through the pipes, leaving the blower entirely or practically freed JOHN W. s'rEvENs.

Witnesses:

FRANCIS GOULD, I W. B. GLEASON. .l

In the use of tine fuel .thie cleans-

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